411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...c6/2. d4/2...d5/3. exd5/3...cxd5/4. c4/4...Nf6
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Caro-Kann, Panov-Botvinnik Attack Caro-Kann
4... Nf6 · Caro-Kann, Panov-Botvinnik Attack
The usual response will be 5. Nc3, to continue to place pressure on white's d5 pawn. White aims for direct pressure, often at the expense of long-term structural weaknesses.
Theory table
5. Nc3
References
Caro-Kann
Nunns Chess Openings. 1999. John Nunn (Editor), Graham Burgess, John Emms, Joe Gallagher. 1-8574-4221-0.
Modern Chess Openings: MCO-14. 1999. Nick de Firmian, Walter Korn. 0-8129-3084-3.
Play the Caro-Kann. 2007. Jovanka Houska 9781857447965